HOME IN EXILE 311 then stopped with a bamboo peg, for the purpose of inspection of the different sections when any part should be clogged up. He estimated that something over ten thousand large bamboos would be sufficient for the purpose. But these bamboo sections had to be inspected constantly and periodically replaced, like modern raikoad ties. Officers should be appointed for the constant supervision of the pipe lines and requisitions should be made for an annual supply of bamboo from the eastern districts for the replacements. Afraid of causing trouble for his friend, he asked Wang Ku to let no one know that the idea came from him, for he was out of favour with the ruling regime. But Wang Ku was later cashiered for "giving famine relief without justification".